Low-fusing temperature porcelain

Details Low-fusing temperature porcelain Low-fusing temperature porcelain

A - Human Necessities

61

K

A61K 6/06 (2006.01) C03C 8/02 (2006.01)

Patent

CA 2192353

A low-fusing temperature porcelain composition for use in dental prostheses is disclosed having a fusing temperature of about 700 °C ~ 50 °°C and a coefficient of thermal expansion compatible witha substrate of metal or ceramic. The composition includes, in weight percent of the composition, SiO2 at 57-61, Al2O3 at 6.5-11.5, Na2O at 10-11, K2O at 8-16, Li2O at 1-3, CaO at 1.5-4, BaO at 1.5-2.5, CeO2 at 0.5-2, and Tb2O3 at 0.5-2.

Composition de porcelaine à basse température de fusion destinée à être utilisée dans des prothèses dentaires, qui possède une température de fusion d'environ 700 DEG C +/- 50 DEG C et un coefficient de dilatation thermique compatible avec un substrat de métal ou de céramique. Ladite composition comporte, en pourcentage en poids, SiO2 à 57-61, Al2O3 à 6,5-11,5, Na2O à 10-11, K2O à 8-18, Li2O à 1-3, CaO à 1,5-4, BaO à 1,5-2,5, CeO2 à 0,5-2 et Tb2O3 à 0,5-2.

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